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| author | Daniel Wagner <daniel.wagner@bmw-carit.de> | 2013-01-21 21:09:00 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-01-22 14:17:38 -0500 |
| commit | d84295067fc7e95660d84c014aa528f4409c070d (patch) | |
| tree | 152cd9edc0554a8b3e5676294be21151703fc6b5 /net | |
| parent | a05948f296ce103989b28a2606e47d2e287c3c89 (diff) | |
| download | linux-stable-d84295067fc7e95660d84c014aa528f4409c070d.tar.gz linux-stable-d84295067fc7e95660d84c014aa528f4409c070d.tar.bz2 linux-stable-d84295067fc7e95660d84c014aa528f4409c070d.zip | |
net: net_cls: fd passed in SCM_RIGHTS datagram not set correctly
Commit 6a328d8c6f03501657ad580f6f98bf9a42583ff7 changed the update
logic for the socket but it does not update the SCM_RIGHTS update
as well. This patch is based on the net_prio fix commit
48a87cc26c13b68f6cce4e9d769fcb17a6b3e4b8
net: netprio: fd passed in SCM_RIGHTS datagram not set correctly
A socket fd passed in a SCM_RIGHTS datagram was not getting
updated with the new tasks cgrp prioidx. This leaves IO on
the socket tagged with the old tasks priority.
To fix this add a check in the scm recvmsg path to update the
sock cgrp prioidx with the new tasks value.
Let's apply the same fix for net_cls.
Signed-off-by: Daniel Wagner <daniel.wagner@bmw-carit.de>
Reported-by: Li Zefan <lizefan@huawei.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: John Fastabend <john.r.fastabend@intel.com>
Cc: Neil Horman <nhorman@tuxdriver.com>
Cc: netdev@vger.kernel.org
Cc: cgroups@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/scm.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/net/core/scm.c b/net/core/scm.c index 57fb1ee6649f..905dcc6ad1e3 100644 --- a/net/core/scm.c +++ b/net/core/scm.c @@ -35,6 +35,7 @@ #include <net/sock.h> #include <net/compat.h> #include <net/scm.h> +#include <net/cls_cgroup.h> /* @@ -302,8 +303,10 @@ void scm_detach_fds(struct msghdr *msg, struct scm_cookie *scm) } /* Bump the usage count and install the file. */ sock = sock_from_file(fp[i], &err); - if (sock) + if (sock) { sock_update_netprioidx(sock->sk, current); + sock_update_classid(sock->sk, current); + } fd_install(new_fd, get_file(fp[i])); } |